How to address envelopes?

Yes, I would just address it to The ___ Family.

If its for a whole family then yes do "The Smith Family". If its for a couple I would do "Mr. & Mrs. John Smith" and if its for a single person who you are giving a plus one to I would do " Mr. John Smith & Guest. If it is an unmarried couple I would use " Mr. John Smith and Mrs. Jane Doe".

Mr. and Mrs. Bob Jones and Family or

The Smith Family.

Yes you would put the smith family for the whole family. For anyone over 18 they would receive their own invitation though.

Are you sure that you want to do that?

Just thinking that the 12+ yo will want to bring a friend or the person that they’re dating as well. Invites should be for who YOU want to see on that day and look at in your pictures.

That's how we did it, just to the family "The Smith Family"

I think adding "Family" implies the parents and kids, with no plus ones for the kids. You can reiterate this in the RSVP - either by writing in the number of guests or saying something like "__ of 4 attending", or if you're using online RSVPs by only naming the parents and kids so they can't add anyone else. If you're super worried about it, you could always reach out to them and make sure they know you have X seats reserved for the family if they can make it.

When inviting a whole family, we addressed the invite to "The Smith Family"

View Quoted Comment Yeah I also so a post where someone said they put "we have reserved ____ seats in your honor" so that's an option too!

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I'd definitely do this, along with addressing the invite to, for example, the Smith Family